Borage

Borage grows best in well-drained soil near pH 6.0-7.0 and needs little fertilizer beyond a modest compost addition. Give its broad, bristly foliage room, and remove spent flowers if you do not want abundant self-sown seedlings.

Sun

Full sun

Water

Even moisture; about 1 in/week including rain

Spacing

18 in

First harvest

50–60 days

Tips

• Direct sow seeds 1/2 inch deep after severe cold has passed and thin plants to 12-18 inches apart.
• Water young plants regularly, then water established plants deeply during extended dry spells.
• Avoid heavy nitrogen feeding and stake tall plants before wind or rain topples them.
• Watch for powdery mildew on crowded plants and cut off faded flower clusters before seeds drop.
• Pick newly opened flowers for ornamental use; borage contains pyrrolizidine alkaloids, so avoid routine consumption and seek medical advice before ingesting it.